Answered

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4) In which situation is the speed of the car constant while its velocity is changing?
A) The car travels down a straight track at 30
m
Ein
B) The car travels around a circular track at 30
m
Elu
C) The car begins from rest and accelerates to 20 m
20
D) The car begins traveling at 30
ws
and slows to 15
S
En


Sagot :

Answer:

B

Explanation:

Since speed has to be constant , we consider only the velocity hence Velocity is associated with directional change , Option B gives a better insight because the car is moving with constant speed but different directions